In industrial water treatment systems, especially high-demand industrial reverse osmosis setups, the quality of Water Treatment Consumables directly determines operational stability, efficiency, and long-term cost-effectiveness. The DHP 15 Axial Piston Pump, jointly developed by Wuxi Fenigal Science and Technology Co., Ltd. and its OEM partner Shenzhen CW Environment Technology, is a high-performance high-pressure pump tailored for industrial reverse osmosis. As a critical component in Water Treatment Consumables, it solves the core challenge of conveying high-pressure, low-viscosity corrosive fluids, making it indispensable for seawater desalination, wastewater zero-liquid discharge, and food/pharmaceutical membrane concentration.
The DHP 15 Axial Piston Pump is the result of Fenigal’s 30+ years of expertise in high-pressure plunger pump technology, designed to meet the rigorous demands of industrial reverse osmosis. It excels in handling high-pressure, low-viscosity corrosive fluids, including seawater, high-salt industrial wastewater, and pharmaceutical raw material liquids – all scenarios where reliable Water Treatment Consumables are non-negotiable.
At its core, the pump operates on the axial piston principle: plungers move reciprocally parallel to the drive shaft within plunger bores, creating volume changes that enable efficient fluid transfer. A defining advantage that elevates it above ordinary Water Treatment Consumables is its fluid self-lubrication technology. Unlike traditional plunger pumps that require a lubricating oil tank, the DHP 15 uses the conveyed liquid as the lubricant, eliminating the risk of oil leakage entirely. This is a game-changer for reverse osmosis systems where medium purity is critical (e.g., seawater desalination for drinking water or pharmaceutical liquid concentration), as it prevents oil contamination from compromising product quality.
Additionally, the pump integrates a standard flush check valve. When the pump stops, this valve ensures one-way fluid flow from inlet to outlet, preventing medium backflow that could damage the pump’s seals and reverse osmosis membranes – another high-value Water Treatment Consumable. As a flagship model in the DHP series, it inherits three core traits that make it a top-tier Water Treatment Consumable:
- Superior Corrosion Resistance: Key components are crafted from 2205 duplex stainless steel (SAF 2205 / EN 1.4462 / UNS 31803), offering exceptional resistance to high-salt media. This allows it to withstand corrosive fluids like seawater and concentrated industrial wastewater for long periods.
- High Efficiency & Low Noise: Pulsation amplitude is far lower than centrifugal pumps, and the optimized multi-plunger design further reduces vibration. Its noise level is ≤85 dB(A) (per EN ISO 3744-2010), making it suitable for food and pharmaceutical workshops with strict environmental requirements.
- Space-Saving Compactness: The pump can be directly installed on motors or internal combustion engines, requiring no extra large space – ideal for space-constrained scenarios like island desalination plants or coastal factories.
For users selecting Water Treatment Consumables, accurate technical parameters are essential to ensure compatibility with existing systems. The DHP 15’s parameters are optimized for industrial reverse osmosis, as detailed in the table below:
As a fixed-displacement axial piston pump, the DHP 15’s flow rate has a strict proportional relationship with the input shaft rotation speed – a key feature that enhances its adaptability as a Water Treatment Consumable. Users can adjust the motor speed to match the system’s required flow rate using the formula:
Selected Motor Rotation Speed (r/min) = (Required Flow Rate (m³/h) × Rated Rotation Speed (1500 r/min)) / Rated Flow Rate (15 m³/h)
For example, at 700 rpm, the pump delivers approximately 7 m³/h of flow, while at the rated 1500 rpm, it reaches 15 m³/h. This flexibility allows it to adapt to changing water treatment demands (e.g., varying wastewater volumes in factories or seasonal adjustments in desalination plants) while maintaining consistency with other Water Treatment Consumables.
Power consumption is a critical cost factor for industrial water treatment systems. The DHP 15’s power requirements are optimized to balance performance and efficiency, helping users select the right motor and avoid overload – a key step in protecting both the pump and other Water Treatment Consumables. The table below outlines its power values at typical pressures:
Proper installation and operation are vital to maximizing the DHP 15’s lifespan and preserving the integrity of other Water Treatment Consumables (e.g., reverse osmosis membranes, filters). Below are the core guidelines:
Industrial reverse osmosis media (e.g., seawater, high-salt wastewater) often contains tiny particles that can damage the pump’s internal precision components (such as the narrow clearance between plungers and plunger sleeves). To prevent this, a 10 μm absolute accuracy depth filter (a critical supporting Water Treatment Consumable) must be installed at the pump’s inlet. This filter must achieve 99.98% filtration efficiency for particles larger than 10 μm (β10>5000). Bag filters (with only 90% efficiency) are prohibited, as they cannot block fine particles – leading to rapid wear of the pump and increased replacement costs for Water Treatment Consumables. Spiral-wound filter elements are strongly recommended.
- Low-Pressure Protection: Install a low-pressure control switch (set to 1 Bar) at the inlet. If the inlet pressure drops below 1 Bar, the pump shuts down automatically, preventing cavitation that can scratch plungers and damage internal seals (expensive Water Treatment Consumables to replace).
- High-Pressure Protection: Install a high-pressure control switch (set to 70 Bar) between the pump’s outlet and the reverse osmosis membrane. This stops the pump in case of overpressure, protecting the membrane – a core Water Treatment Consumable that is costly to repair or replace.
- Safety Valve: A safety valve (per Chapter 10 of the product manual) is mandatory to absorb instantaneous pressure spikes after pump startup, avoiding damage to the system and Water Treatment Consumables.
Before starting the pump:
- Thoroughly flush pipelines and the system to remove welding slag, debris, or rust that could clog the pump or scratch reverse osmosis membranes.
- Use the pump body’s exhaust valve to discharge air from the pump and system, preventing cavitation.
- Confirm the pump’s rotation direction matches the arrow on the pump body.
- Critical Warning: Never start the pump with the outlet valve closed. This can cause frequent safety valve activation or pipeline bursts, leading to costly repairs for the pump and surrounding Water Treatment Consumables.
The DHP 15’s dimensions are designed for easy integration with industrial water treatment setups. Its inlet and outlet feature M52×1.5 threads (17 mm depth), requiring matching high-pressure pipe fittings (another essential Water Treatment Consumable). When paired with a frequency conversion motor, the complete equipment’s dimensions vary by motor power, as shown below (Unit: mm):
Proper maintenance ensures the DHP 15 – a valuable Water Treatment Consumable – delivers long-term reliability, while Fenigal’s comprehensive warranty services provide peace of mind.
- Daily Maintenance: Monitor noise and vibration in real time. If abnormalities occur (e.g., sudden noise increases or excessive vibration), shut down the pump immediately to inspect for plunger wear, seal aging, or insufficient inlet pressure. In high-salt environments (e.g., seawater desalination), flush the pump cavity with fresh water after each shutdown to remove concentrated brine – preventing salt crystallization from damaging plungers and seals. For thorough flushing, start the pump briefly to expel residual brine.
- Shutdown Maintenance: For short-term shutdowns (≤3 days), keep the pump filled with medium (no flushing needed). For medium-term shutdowns (3～15 days), flush thoroughly with fresh water. For long-term shutdowns (>15 days), use fresh water with a bactericide to prevent microbial growth that could corrode components. After flushing, seal the inlet and outlet to block impurities.
- Regular Inspection: After 8000 hours of operation, conduct a full disassembly and inspection. Replace worn parts (e.g., seal plates, plunger sleeves, springs) – essential Water Treatment Consumables – and check the check valve’s tightness to avoid internal leakage. Inspect inlet/outlet thread wear and replace sealing gaskets promptly to prevent high-pressure leakage.
Fenigal provides end-to-end support for this Water Treatment Consumable, ensuring customers’ water treatment systems run smoothly throughout the pump’s lifecycle:
- Unmatched Scenario Adaptability: Tailored for industrial reverse osmosis, it handles high-salt fluids and meets the needs of seawater desalination, wastewater zero-liquid discharge, and food/pharmaceutical membrane concentration – all relying on its performance as a core Water Treatment Consumable.
- Superior Reliability: The self-lubrication design and 2205 stainless steel components eliminate oil pollution and resist corrosion, ensuring long-term stability alongside other Water Treatment Consumables.
- Easy Integration & Low Maintenance: Compact dimensions simplify installation, and the self-lubricating design reduces maintenance work – lowering overall water treatment system costs.
- Strong After-Sales Support: Fenigal’s 24-hour fault response and genuine spare parts guarantee minimal downtime, protecting your investment in Water Treatment Consumables.
If your industrial reverse osmosis system needs a high-performance, reliable high-pressure pump – a critical Water Treatment Consumable – the DHP 15 Axial Piston Pump is the ideal choice. For more information or to inquire about 选型,contact Fenigal today:
- Address: Chuangyi Chanye Park, No. 100 Dicui Road, Binhu District, Wuxi City, Jiangsu Province, China
- Tel: +86-510-85163211
- Email: sales@fgwater.com
